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21923 (1999 VT52)
Classification: Main-belt Asteroid          SPK-ID: 2021923
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1371321633292744 1.9102e-08  
a 2.647745627429763 1.0116e-08 au
q 2.284654541594693 4.9888e-08 au
i 14.5329856800492 3.458e-07 deg
node 77.88362567696561 9.1063e-07 deg
peri 199.6535243993892 9.2487e-06 deg
M 107.9266857841359 7.6275e-06 deg
tp 2458728.720401670711
(2019-Sep-02.22040167)
3.2455e-05 TDB
period 1573.666921805068
4.31
9.0186e-06
2.469e-08
d
yr
n .2287650550518426 1.311e-09 deg/d
Q 3.010836713264834 1.1503e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2398  
   data-arc span      10153 days (27.80 yr)  
   first obs. used      1993-05-20  
   last obs. used      2021-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41474  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-17 03:06:15  

Additional Information
 Earth MOID = 1.27134 au 
 Jupiter MOID = 2.10214 au 
 T_jup = 3.333 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.79   n/a E2021B10  
diameter diameter 8.366 km 0.088 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.208   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

21923 (1999 VT52)          Discovered 1999-Nov-03 by LINEAR at Socorro
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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